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Starmon mini - underwater temperature recorder
Starmon TD - temperature depth data logger
DST nano-T world's smallest implantable temperature logger
DST nanoRF-T - temperature telemetry
DST micro-T small implantable temperature logger
DST microRF-T temperature telemetry
DST micro-HRT heart rate and temperature logger
DST microRF-HRT telemetry heart rate and temperature logger
DST micro-TD small temperature and depth data storage tag
DST milli-T small implantable temperature data logger
DST milli-HRT heart rate and temperature logger
DST milli-TD mini pressure (depth) and temperature logger
DST milli-F depth temperature archival tag
Pasteurisation Logger DST milli-PU
Pasteurization temperature logger - DST milli-T-PU
DST centi-T implantable temperature data logger
DST centi-HRT heart rate and temperature logger
DST centi-HRT ACT heart rate, activity and temperature logger
DST centi-ACT activity and temperature logger
DST centi-TD temperature depth recorder
DST CTD miniature salinity, temperature & depth logger
DST CT salinity (conductivity) & temperature logger
DST tilt - subsea tilt logger with temperature & pressure sensors
DST magnetic - compass, tilt, temp & depth logger

The DST magnetic is a small data logger / archival tag that measures and records earth's magnetic field strength (in three directions), tilt (in three directions), acceleration, temperature and depth. From the magnetic field strength measurements a relative magnetic field vector is calculated, which can be put into models to find longitude and latitude of the tagged fish. It is also a useful tool for recording compass directions. DST magnetic is also used in studies of various gear and equipment.

Measurements are stored in the logger‘s internal memory with a real time clock reference for each measurement. The advantage of the DST magnetic is that it has the third vector for magnetic field strength (3-D magnetic). DST magnetic has full compass heading tilt correction so accuracy is maintained when tilting away from its horizontal position.

When used on fish the tag can either be implanted or attached externally, for studying their habitat movements and migration routes. For external tagging Star-Oddi can provide a specially designed DST fastener kit.

For use on various gear the Adjustable Housing can be purchased. The recorder is fixed inside the housing, which protects the recorder and gives flexible mounting options. For optimized compass accuracy the housing should be placed in an approximate horizontal plane.

The DST magnetic is supported by the SeaStar software and the Communication Box which serves as an interface between the logger and a PC.  Communication between the logger and the Communication Box is wireless. In SeaStar, the user sets the start time, start date and sampling interval before starting the recorder. Up to seven different intervals can be set for the same measurement sequence. This is especially useful when more frequent measurements are needed at a certain time period.

With default programming depth, temperature, magnetic field strength and tilt are recorded at the same time. Optionally, magnetic-tilt and temperature-depth can be set as primary and secondary parameter pairs with different sampling frequency. That way memory partitioning can be customized according to individual preferences.

When the DST is recovered, recorded data is uploaded to SeaStar where results are displayed both in graphic and tabular form. Since the tilt sensor is in fact an accelerometer the acceleration (m/s2) data are also displayed in the SeaStar software. After retrieving the data, the DST can be re-programmed and reused as long as the battery lasts.

A set of Communication Box and SeaStar software needs to be purchased with the first order. For more information about accessories please click here.

DST bird - geolocator with light & temperature sensors
Starmon ES - External Sensor Data Logger
DST pitch & roll - miniature temperature, depth, pitch & roll sensor
DewMon - Humidity, temperature & pressure monitor
Fish Selector
Underwater Tagging Equipment - UTE